thorax anatomy Flashcards
what is the jugular notch
marks beginning of superior mediastinum
also known as suprasternal notch
what are the clavicles
collar bones, connected to scapula and head of humerus via acromion
what is the acromion
attaches clavicle to shoulder blade more specifically attaches clavicle to scapula and head of humerus via ac joint
what is sternocleidomastoid
accessory muscle in respiration ( during quiet breathing)
what is the costal margin
lower edge of the thorax formed by 7th to 10th rib
what ribs are the true ribs
1-7
what are the false ribs
8-10
what are the floating ribs
11-12
what is the significance of the manubrio sternal joint
the point where the manubrium meets the sternum body- same point as sternal angle (angle of louis)
RATPLANT
what does RATPLANT stand for
rib 2
aortic arch
T tracheal bifurication
Pulmonary trunk
Ligmentum arteriosum
A- azygous veins
N- nerves
T- right to left movement of thoracic cavity
what do azygous veins do
deliver deoxygenated blood from posterior walls of thorax and abdomen into superior vena cava
what does cardiopulmonary plexus innervate
thoracic cavity
what is the transverse thoracic plane
separates superior mediastinum from inferior mediastinum
passes through intercalated disc t4-t5
what does RATPLANT acronym stand for
r- rib 2
A aortic arch
T tracheal bifurication
P pulmonary trunk
L ligmentum arteriosum
N nerves
T- right to left movement of thoracic duct- lymphatic drains at junction between left subclavian vein and left internal jugular vein
what three parts is the mediastinum split into
anterior mediastinum
middle mediastinum
posterior mediastinum
what are ribs 1-7 called and where do they attach
true ribs attach to sternum or manubrium
what are lower ribs called
false ribs join directly with the sternum but by the costal margin
what ribs are floating
ribs 11-12
what is the cervical rib
can arise from c7 compresses the subclavian artery or the inferior trunk of the brachial plexus c8-t1
how do the ribs run
anterioinferiorly
what joints connect first rib to manubrium
primary cartilagenous joints
what joints are between the true ribs apart from the 1st rib
synovial jonts
what are secondary cartilagenus joints
midline joints with exceptions
what form the infrasternal angle
the 2 costal margins
